Optical Drive Chip Control Parameter Set for LED Flash Delay
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Solution Overview
Problem
Existing methods for controlling LED flashes in mobile terminals, such as mobile phones, suffer from delays due to the main processor's multithreaded work and the need for separate 'on' and 'off' commands, leading to inefficiencies in data transmission.
Innovation Solution
An optical drive chip with a receiving unit, an execution unit, and a storage unit that converts data into a drive signal using a control parameter set, including an encoding type and flash control parameters, to control a light-emitting device without delays, ensuring reliable data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the main processor controls the LED flash by sending separate 'on' and 'off' commands, then the control function is achieved, but transmission delay occurs due to multithreaded work and command sequencing
Solution Approach 1:
The patent segments the control function by introducing a dedicated optical drive chip that handles flash control independently from the main processor. This separates the data transmission task from the main processor's multithreaded operations, eliminating the delay caused by command sequencing while maintaining reliable control of the LED flash.
Solution Approach 2:
The optical drive chip acts as an intermediary between the main processor and the LED flash. It receives control commands from the main processor and directly controls the flash's on/off states, bypassing the delay inherent in the main processor's multithreaded command execution and ensuring timely data transmission.
2Productivity
If the main processor directly controls the LED flash, then control simplicity is maintained, but transmission efficiency decreases due to processing delays
Solution Approach 1:
The patent divides the system into distinct functional modules: the main processor handles high-level logic, while the optical drive chip handles real-time flash control. This segmentation enables parallel operation where the optical drive chip can immediately respond to control signals without waiting for the main processor's multithreaded scheduling, thereby improving transmission efficiency and reducing response time.
Solution Approach 2:
The optical drive chip autonomously manages the LED flash control based on received commands, performing the actual on/off switching without requiring continuous intervention from the main processor. This self-service capability reduces control response time and allows the main processor to focus on other tasks, improving overall system productivity.
Data Source
AI summary
This application discloses a method for an optical drive chip to control a light-emitting device and an optical drive chip thereof. A receiving unit of the optical drive chip obtains to-be-sent data, and transmits the to-be-sent data to an execution unit of the optical drive chip; and the execution unit converts the to-be-sent data into a drive signal according to a control parameter set, where the drive signal is used to control a light-emitting device to emit visible light. Because the optical drive chip converts the to-be-sent data into the drive signal according to the control parameter set so as to control the light-emitting device, rather than obtaining a single control parameter one by one to control the light-emitting device, no delay problem occurs in a process of controlling the light-emitting device by the optical drive chip. In addition, the to-be-sent data is encoded, which ensures data transmission reliability.